.backTop {
  width: 80px;
  height: 80px;
  background: rgba($color: #fff, $alpha: 0.4);
  text-align: center;
  border-radius: 50%;
  position: fixed;
  right: 32px;
  bottom: 10%;
  z-index: 3;
  border: 1px solid #ccc;

  .backTopImg {
    display: block;
    width: 48px;
    height: 48px;
    margin: 0 auto;
    margin-top: 5px;
  }

  .backTitle {
    font-size: 20px;
    color: #000;
    margin-top: -5px;
  }
}